Flash-light cartridge.



N0. 696,270. v PahlltdMar. 2 5, |902.'

YK, BEND MIDT. FLASH LIBH ARTI-RIDGE. (Appimmgm mi. xa, 190s.)

Gawzgwm UNITED STATES ATENT Prion] KARL RENDSOIIMIDT, OF BERLIN,GERMANY.

FLASH-LIGHT CARTRIDGE.

SPECIFICATION forming part of Letters Patent No. 696,270, dated. March25, 1902.

Application filed January 16,1902. Serial No. 90.012. (No model.)

To LtZZzUr/om it' may concern:

Be it known that I, KARL RENDscHMIDr, engineer, a citizen of the Kingdomof Prussia, and a resident of Berlin, Germanydwhose post-office addressis Wilsnackerstrasse 19,) have invented certain new and usefulImprovements in Flash Light Cartridges, of which the following is aspecification.

The present invention relates to Hash-light cartridges which have beenformed by compressing measured quantities of magnesium orsimilarpowderinto the form of small cakes or tablets. It is a known fact that bycompressing ilash-light powder into solid masses the iniammability ofsame is considerably reduced and that ignition only will be possible byaid of a peculiar primer. The photographer who intends to use thesecartridges is therefore obliged to carry primers besides the cartridges.

The object of the present invention, of which Figure l of theaccompanying drawings shows a perspective view, and Fig. 2 a verticalsection, is a cartridge which, besides the necessary quantity ofmagnesium, dac., powder also `contains the primer, which is easilyseparated from the cartridge proper and then is easily ignited by meansof saltpeter paper, causing by its ignition the explosion of thecartridge. t

The cartridge may have any convenient form-square, round, hexagonal,85o. A small part of it, which is separated from the rest by a groove,may be easilyv broken off and pulverized between the fingers, thispowder serving for aprimer.

In the drawings, a is the cartridge, which has the form of a -ilatlrounddisk.` A small part b of the same may be` easily broken off, a groove cfacilitating said operation. f As it will be difficult to disintegratethe part bwhen the cartridge is heavily'compressed, and as, on the otherhandLit is of great importance to reduce the volume of the cartridge andrender it as hard as possible I intend to form the cartridges in such away that .the cartridge proper will be highly compressed, Whereas thedetachable primer is of softer consistency.

For that purpose I proceed in manufacturing the cartridges in such a waythat I do not distribute the flash-light powder uniformly over the wholeform in which the pressing is done, but bring in the powder in such away thata thicker layer is formed on the part corresponding to thecartridge proper and a thinner one on the part to be occupied by theprimer. The disk on entering the form therefore will compress the formerpart stronger than the latter one.

In order to do away with the necessity of carrying saltpeter paper forigniting the primer, the Whole cartridge may be wrapped in a piece ofsame and may be brought in thisA form into the market. -Each cartridgethen contains al1 that is necessary for making a Hash-light exposure.

What I claim is- 1. A dash-light cartridge of compressed Hash-lightpowder,part of which may beeasily separated from the rest, said partserving after disintegration as a primer for igniting the cartridgeproper.

2. A flash-light cartridge consisting of the cartridge proper and theprimer, said primer being easily detached from the cartridge, saidcartridge and primer forming a homogeneous mass.

3. A flash-light cartridge, comprising the cartridge proper and aneasily detachable' primer, the cartridge containing the powder inhighly-compressed state, whereas the powder forming the primer is lesscompressed.

' 4. Process 4for manufacturing flashy-light cartridges consisting of acartridge properand an easily-detachable primer, consisting in iillingthe part of the form corresponding tothe cartridge proper with a thickerlayer of powder than the part corresponding to the primer. v

In testimony whereof I afx my signature in presence of two witnesses.

KARL RENDSCHMIDT.

f l Witnesses:

WOLDEMAR HAUPT, HENRY HAsrER.

